--- a/tools/designer/src/lib/uilib/formbuilder.cpp	Fri Feb 19 23:40:16 2010 +0200
+++ b/tools/designer/src/lib/uilib/formbuilder.cpp	Fri Mar 12 15:46:37 2010 +0200
@@ -494,7 +494,7 @@
 {
     m_customWidgets.clear();
 
-    foreach (QString path, m_pluginPaths) {
+    foreach (const QString &path, m_pluginPaths) {
         const QDir dir(path);
         const QStringList candidates = dir.entryList(QDir::Files);